Thread-gage.



'termined amount Y -ness of the washer and they operator graspremoved. yA' washer 24 should first be inserted over the tapered' extremity 12 o f the extremity 12 of'the plug insertedin the orifice member 14 the screw 25 and washerv26 inserted in the position shown in Fig. 5, ,and

then the -s'crew25 advancedy until the mem- 'ber 14 has been forced on the extremity 12 into contact with the washer.: The member 14 will thus have been expanded a prededependingon the thicking the handle 11 should screw the threads 'Iof the member into the female threads to be gaged.. If the'member 14 is` found to be too large to fit these threads, its diameter v4may be decreased by putting in'a slightly 'thicker Washer, and a thinner one may be in gaging a female thread and then the I. 19 suiciently to .'permit it to be placed with member 17 is expanded by the tapered plug aportion of its inner surface 'inclosing the member Mathis member 1.7 is then contract- 'ed by gradually withdrawing the tapered.

" plugY 19 and tighteningthe contracting screw i 20.'until themember 17 fits the periphery of.

the vmember 14 and the female'threads on the, vv:former actually Amesh withthe male threads on the member -14. The member 17 should- -then preferably be in approximately the position' shown in dottedvlines inv Fig. 2 and the threadsf28 could be meshed with the male threads o'n'the object .to be gaged. If

the threads 28 are found to be of too 'great diameterto fit the threads on the object, a

- thickerwashermay be placed on the plug 10 thus contracting the member 14, and the lmember 17 may be contracted suiiciently to .again fit the member 14. As in the case with the ga'ging of a female thread, the thickness of the washer 24 determines the thread diameter of the object.

If desired, the member 17 may be `used independently of the-rest .of the device andV the gage of the thread determined by the'position of the plug-19. y The key shaped slots 118 in thismember permit it to uniformly contract and expand so that a4 perfect cyl-` inder is formed at all times. The same is true of the. member 14cas the construction j modeof operation of this device could'be madebyany one skille in the art` without and arrangement of the slots permit of 'this uniform'expansion.`

The applicant-is awarethat aconsiderable y number., of variations inftheconstruction and departing from the sco -of his invention and he does not care to be limited to the 13 of the expansible v expander; and means for advancing said 1.08am@ v .particular embodimentfherein scribed., y A

It is'believed that-the construe lon and; many advantages of the invention will be thoroughly understood from the foregoing.

Having thus described my invention,. I` claim: .I .i

y1. In a device ofthe class describedthe combination of a 'body portion having .a threaded periphery andprovided fwith an oricetherein', said body portion forming an endless expansible gage-member; and an expander having. a plane surface adapted to enter said orifice and expand said body portion without distortion of the threads, said threads being'moved outwardly at right any.

gles to the axls of said expander; i 2. In a device'of the class described; the combination of a body portion having a threaded periphery and provided with va tapering orifice concentric therewith, said body portion formingl an endless expans` bleA gage-member; and an expander provided with a tapering portion having a plane surface adapted to enter said orifice and ex. pand said body portion without distortion of the threads,said threads being moved outwardly at right angles to the axis of saidv expander. Y 3. In a device of the class described, the combination of a body portion having a threaded periphery andv provided with a ta peri'ng orifice. thereim' said body portion ,forming an endless vexpansible gage-mem'- i ber; a tapering 4plug having a plane surface 100 adapted to enter said orifice andexpand. said body portion without distortion ofthe -threads, said threads being moved outwardly at right angles to the axis of said plug within said orifice.

4. Ina device of the class described, the combination of. a gage-member Aprovided with a tapering orifice concentric therewith -fsaid memberhaving in its periphery radial slots terminating near the wall of said orice and other radial slots in the wall of said orifice terminating near the l periphery of said member: and an expander adapted. to enter said orice.

5. In a device of the classdescribed, the

combination of a gage-member provided with a tapering orifice concentric therewith said member having in its peripheral -wall and inthe wall vof said orifice radial slots .120

' arrangedalternately and 'terminating near the opposite wallg andan expander'adapted to enter saidorilice. y F

6. In a device of the class described, the# combination of, a gage-member provided with 'an orice and having in its periphery* radial slots terminating ynear the .wall of said orifice and other radial slots in the Wall- Y.

of said orifice terminating near its periph# ery, each of said peripheral slots being dis-,139

posed on the op from one-of. said :orifice slots; and an' exprovided with an posite side- `of said orifice pander adapted' tojenter said Ina device of the class orifice. described, the

`combination of an expansible gage-member;

means -f'or .expanding said member; md

meanssurronnding said expander andabt' tingthe 'end face'of' said gage member forpredetermining the'inovement of said expending means.

8.v -Inafdevlce of' theclas's described, the combination `of an expansible I,ga,: ,e-1neml oer orice threing A an expander having a' plane surface adaptedato and l abutting the said expander.

enter said orice to. expand `said'gage-memsaid expander ber; and means surrounding end face ofsaid gage member for'varying the limit offtra'vel of- 9. In -a deviceI of thel cl'ass described, .the combination Otan expnsible gage-member, provided with a to 'expand said means. surroun the` endface of said gage memben'for limitd lng the advance said orifice.

10. In. a device 'ofthe class described', the

com i'nation of a' .gage-member 'provided 'vvitlranv orificeand having a radial slot in its' perifphery 4terminating at' 'a point re moved ront saidr orifice ,'and a similar slot in the Wall 'of 'said'l orifice on thev opposite side .of said orifice from' saidperipheral slot and-.terminating at said walljand' an expanderad'apted'to enter said orifice;

l 11. n1. a devies-gf the classees-crime,- the combination fo'fan expan'sible gagemember tapering plug ladaptedl to .enter ,said 'orifice v.tapering plug-adapted to' enter said orifice to expand said fgae-member 'and provided with a shoulder adjacent to .said tapering portion; and. washers ofvarying thicknesses adapted to'lbe'lplaced upon the tapering po tion ofsaid 'v der and said member to limit the ofsaid plugwtbin fsa-id orifice.

13. I na deviceslothe class described,` theA i to enter said orifice; and memberfadapted to1 fit? provided' With an pander adapted to enter saidprifice; a supformly adjusted `to tapering'l orifice tliereinj'a'- tapering' plug adapted tojentersaid orifice gage-member; and removab1e.

ing :said plug and abuttinga ,pointremoved from' said between' theends of er1- With a' tapering orifice therein; a

-plemen-tal ring' provided Wit'hf rad1al whereby it may be uniformly ladjusted to screw connecting said l Signed byu-.ine atli Post Oiiice Sq., Boston, A v Mass .-,vf1thi s tlrday of February, 1911.'

to'act between said l sh`on combination of an expansible member providedvjigitj'h'an orifice therein and-having its periphery-L threaded; an expander adapted about-the threaded periphery of the first member.

414:. In a deviceof the class described, the combination of an expansible gage-member orifice therein; an explemental gage-memberA provided with radialslots therein Wherebyit may be unit'here0f'; and means for expanding said vsupplemental gage-member.` M l5. In a dev-ice ofthe class described, the

combination of-an 'expansible gage-member an .expansible gage' permita portion of its, Inner face to lit about the' periphery of the .expansible gage-member in any position provided with an orifice thereln; aneX- panderadapted to enter said orifice; a supplement-al gagefmemb'er provided with ragage-member -dial' slots therein whereby it may be uni-v formly adjusted to permit a portion of its inner face tolit tightly about 'the periphery of the gage-member in any position .of saidv and a tapered plug interposed between -t-he ends of said supplemental 16, In' a device of 'the class described,the combination of an expansible gage-nemberi- .provided with an orifice therein an expander adafptedzto enter said orifice ;,a supplement-aly gage-member comprising a split ring pro- .vided with radialV slots therein whereby 1t mayV beuniformlyadju'sted to permit aportion of `itsinne'irface to fit tightly about the'periphery'of the gagemember in any, position of gage-member; and a ,plug interposed said lannular member. 17;: In-adevice of the 'class described', the

combinationcf -an expansible 4gage-member provided With an orifice therein; an ex-A pander adapted .to enter said orifice; a supslots therein permita portionfof its inner tace 4to fitltightly. aboutV the periphery of the gage- .mem

ber in any positionof-sa'id gage-member; a .plug interposed between the ends of said annular member; and an adjusting vgage-lfnember comprising a split 

